Founded in 1974 by former B.F. Goodrich rubber-industry engineer Edward J. Bittle, Seal Master Corporation in Kent, Ohio, designs and manufactures custom fabric-reinforced inflatable seals and bags for demanding applications. Its fully molded, American-made products are engineered with customers for mission-critical environments, and the company says it has created more than 8,500 custom rubber products over nearly five decades. Every product is inspected at least twice and undergoes mandatory underwater leak testing before shipment.
Better Business Bureau A+ Accredited Business
Registration
FDA-Approved Materials
Compliance program
Class VI Certified Materials
Compliance program
BBBA
Quality certification
Sur-SealFounded in Cincinnati in 1965 as a family-owned business, Sur-Seal manufactures engineered components that solve sealing, insulation, thermal-management and protection challenges. Its custom-converting work ranges from precision gaskets to molded and extruded parts, supported by engineering services and a manufacturing network that now spans the United States, Mexico and China. Sur-Seal’s history includes making gaskets for the Apollo missions, while its combined operations now encompass more than 400,000 square feet and over 500 employees.CINCINNATI, OH
Reliable Hermetic SealsReliable Hermetic Seals is a Beavercreek, Ohio-based LLC known for building custom hermetic seals around unusual customer requirements. Its engineering team supports prototypes through production orders for applications ranging from research laboratories to aerospace, while every seal receives visual, electrical, and leak inspection before shipment.BEAVERCREEK, OH
Mantaline CorporationSince its founding in 1964, Mantaline Corporation has built its identity around engineering-driven manufacturing from its headquarters in Mantua, Ohio. The company develops customized elastomeric sealing systems for customers in transportation, construction, and industrial markets, with operations across North America and Mexico. Its quality and environmental systems are registered to ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015.MANTUA, OH
Clark Seals, LtdFounded in 1956, Tulsa-based Clark Seals engineers and precision-manufactures custom elastomeric seals for original equipment manufacturers and oil and gas applications. Its engineers are known for tackling difficult failures, from seasonal snow-blower leaks to contaminated commercial washing-machine seals, often redesigning the seal around the equipment rather than fitting a standard part. The company also operates a 130-employee manufacturing facility in Ningbo, China, with a stated annual capacity of 40 million pieces.WILLOUGHBY, OH